History
We have been here for you for more than 100 years!
Solidis Revisions AG & Solidis Treuhand AG
|
2021 |
Tamara Schwarzenbach becomes a partner |
|
2021 |
Thomas Frischknecht withdraws as a partner and leaves “Solidis” |
|
2020 |
Dominik Frauchiger becomes a partner |
|
2020 |
Peter Gubler und Kurt Frauchiger withdraw as partners but remain with us as advisors |
|
2014 |
Karin Trümpy becomes a partner |
|
2014 |
Consolidation of our locations to Martin-Disteli-Strasse 9 in Olten |
Sudan Partner AG
|
2014 |
Change of name to Solidis Revisions AG |
|
2014 |
Philipp Schlatter becomes a partner |
|
1998 |
Change of name to Sudan Partner AG |
|
1994 |
Reto Gribi becomes a partner |
|
1985 |
Kurt Frauchiger becomes a partner |
|
1983 |
Peter Gubler becomes a partner |
|
1978 |
Edmund J. Blum introduces the partnership model |
|
1976 |
Change of legal form to Adr. Sudan AG für Revision und Steuerberatung |
|
1941 |
Adrien Sudan takes over the office and continues to manage it as a sole proprietorship |
|
1917 |
Eugen Nagel founds a notary’s office in Olten |
TRO Treuhand & Revisions AG
|
2014 |
Change of name to Solidis Treuhand AG |
|
2014 |
“TRO” is taken over by Sudan Partner Holding AG |
|
1971 |
Change of legal form to Treuhand & Revisions AG Olten “TRO” |
|
1946 |
Founding of the general partnership Schenker & Daetwiler |
|
1941 |
Ernst Schenker opens a business services office as a sole proprietorship |
Active partners
Our company has been managed by the owners as a partnership since it was founded in 1917. Currently, the responsibility is shared by 5 partners.